Human CDK7 (Cyclin-Dependent Kinase 7) - Recombinant Protein

Beta LifeScience SKU/CAT #: BLT-08436P
Beta Lifescience recombinant protein notice with SDS-PAGE availability in next QC run
Beta Lifescience recombinant protein notice with SDS-PAGE availability in next QC run

Human CDK7 (Cyclin-Dependent Kinase 7) - Recombinant Protein

Beta LifeScience SKU/CAT #: BLT-08436P
Regular price $595.00 Sale price $445.00Save $150
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Pack Size Price (USD)
500 µg $1,030 (Fall Promotion)
1 mg $1,870 (Fall Promotion)

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Product Overview

Product Name Recombinant Human CDK7 & CCNH & MNAT1 Heterotrimer Protein
Product Overview This recombinant human CDK7 & CCNH & MNAT1 Heterotrimer protein includes amino acids 2-346 of the target gene is expressed in Baculovirus-Insect Cells.The protein is supplied in lyophilized form and formulated in PBS pH 7.4, 0.01% SKL, 5% Trehalose, 1% Mannitolprior to lyophilization.
Target Uniprot Id P50613
Recommended Name Cyclin-dependent kinase 7
Gene Name CDK7
Synonyms CAK1;CDKN7;HCAK;MO15;p39MO15;STK1
Species Human
Predicted Molecular Mass 118.8 (41.2 + 39.7 + 37.9) kDa
Expression System Insect Cell
Expression Range 2-346
Tag N-His
Purity >90%
Formulation Lyophilized
Buffer PBS pH 7.4, 0.01% SKL, 5% Trehalose, 1% Mannitol
Storage Condition 1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Reconstitution Instruction Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Applications Positive Control; Immunogen; SDS-PAGE; WB
Research Area Cell Biology
Target Function Serine/threonine kinase involved in cell cycle control and in RNA polymerase II-mediated RNA transcription. Cyclin-dependent kinases (CDKs) are activated by the binding to a cyclin and mediate the progression through the cell cycle. Each different complex controls a specific transition between 2 subsequent phases in the cell cycle. Required for both activation and complex formation of CDK1/cyclin-B during G2-M transition, and for activation of CDK2/cyclins during G1-S transition (but not complex formation). CDK7 is the catalytic subunit of the CDK-activating kinase (CAK) complex. Phosphorylates SPT5/SUPT5H, SF1/NR5A1, POLR2A, p53/TP53, CDK1, CDK2, CDK4, CDK6 and CDK11B/CDK11. CAK activates the cyclin-associated kinases CDK1, CDK2, CDK4 and CDK6 by threonine phosphorylation, thus regulating cell cycle progression. CAK complexed to the core-TFIIH basal transcription factor activates RNA polymerase II by serine phosphorylation of the repetitive C-terminal domain (CTD) of its large subunit (POLR2A), allowing its escape from the promoter and elongation of the transcripts. Phosphorylation of POLR2A in complex with DNA promotes transcription initiation by triggering dissociation from DNA. Its expression and activity are constant throughout the cell cycle. Upon DNA damage, triggers p53/TP53 activation by phosphorylation, but is inactivated in turn by p53/TP53; this feedback loop may lead to an arrest of the cell cycle and of the transcription, helping in cell recovery, or to apoptosis. Required for DNA-bound peptides-mediated transcription and cellular growth inhibition.
Subcellular Location Nucleus. Cytoplasm. Cytoplasm, perinuclear region.
Protein Family Protein kinase superfamily, CMGC Ser/Thr protein kinase family, CDC2/CDKX subfamily
Tissue Specificity Ubiquitous.

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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